Do you have an alternate page layout scheduled for the weekends? That's the only way I can think of to temporarily change a page layout.

Hello and thank you. Do you know how to check if there is an alternate page layout scheduled for a specific day? 

When you are looking in the admin under Design/Blocks, you will see a URL with a little clock next to it under any URL that has a schedule, and the look of that page is the one being used during the scheduled times. For example, we have a schedule on our homepage at the moment because we have some blocks that we want people to see for the Olympics.

The scheduled times are found at the bottom of the Design/Blocks below the URL map and the Blocks themselves.